From 50cb0018044359180aa57e6aa7ec944def83bbcc Mon Sep 17 00:00:00 2001 From: Vladimir Serbinenko Date: Wed, 29 Jan 2014 23:45:18 +0100 Subject: [PATCH 052/125] * grub-core/disk/ahci.c: Allocate and clean space for all possible 32 slots to avoid pointing to uninited area. --- ChangeLog | 5 +++++ grub-core/disk/ahci.c | 8 +++++++- 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/ChangeLog b/ChangeLog index 51eba95..9bb1817 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,10 @@ 2014-01-29 Vladimir Serbinenko + * grub-core/disk/ahci.c: Allocate and clean space for all possible 32 + slots to avoid pointing to uninited area. + +2014-01-29 Vladimir Serbinenko + * grub-core/disk/ahci.c: Do not enable I/O decoding and keep enabling busmaster for the end. diff --git a/grub-core/disk/ahci.c b/grub-core/disk/ahci.c index 18c1327..d63fd09 100644 --- a/grub-core/disk/ahci.c +++ b/grub-core/disk/ahci.c @@ -358,7 +358,7 @@ grub_ahci_pciinit (grub_pci_device_t dev, grub_dprintf ("ahci", "err: %x\n", adevs[i]->hba->ports[adevs[i]->port].sata_error); - adevs[i]->command_list_chunk = grub_memalign_dma32 (1024, sizeof (struct grub_ahci_cmd_head)); + adevs[i]->command_list_chunk = grub_memalign_dma32 (1024, sizeof (struct grub_ahci_cmd_head) * 32); if (!adevs[i]->command_list_chunk) { adevs[i] = 0; @@ -376,6 +376,12 @@ grub_ahci_pciinit (grub_pci_device_t dev, adevs[i]->command_list = grub_dma_get_virt (adevs[i]->command_list_chunk); adevs[i]->command_table = grub_dma_get_virt (adevs[i]->command_table_chunk); + + grub_memset ((void *) adevs[i]->command_list, 0, + sizeof (struct grub_ahci_cmd_table)); + grub_memset ((void *) adevs[i]->command_table, 0, + sizeof (struct grub_ahci_cmd_head) * 32); + adevs[i]->command_list->command_table_base = grub_dma_get_phys (adevs[i]->command_table_chunk); -- 1.9.0